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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Pre-breeding efforts for low gossypol seed and high gossypol plant in G. herbaceum L. cotton utilizing G. australe Mueller
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Pre-breeding efforts for low gossypol seed and high gossypol plant in G. herbaceum L. cotton utilizing G. australe Mueller

机译：利用澳洲短穗麦勒（G. australe Mueller）对棉花短穗棉低棉酚种子和高棉酚植物的预繁殖努力。

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摘要

Among the 49 species of Gossypium, the Australian species belonging to Hibiscoidia and Sturtia possess unique features of glandless seed and glanded plant. In an effort to transfer this trait to cultivated species of Gossypium, distant hybridization was effected between G. herbaceum race wightianum (2n = 2x = 26) and an Australian species G. australe. This species has its origin in arid zones of Australia, and behaved as facultative cleistogamous in transitional tracts of India. Upon two years of crossing only 0.9% success was achieved to obtain the crossed seeds. The F-1 seeds of the hybrid possessed dormancy. The F-1 plant was sterile due to abortive ovary, and 8-11% of pollen fertility was noticed. The plants have also been found to be of the best genetic stocks for nectar character, bract shape, calyx morphology and other inflorescence traits as both the parents exhibited diversity for many traits. The cross is expected to carry some genetic load, as the species involved are genetically and geographically distant.
机译：在49种棉属植物中，属于Hibiscoidia和Sturtia的澳大利亚种具有无腺种子和无籽植物的独特特征。为了将这一性状转移到栽培的棉属物种中，远缘杂交发生在禾本科草种Wightianum（2n = 2x = 26）和澳大利亚种G. australe之间。该物种起源于澳大利亚的干旱地区，在印度的过渡带表现为兼性的清除性。杂交两年后，获得杂交种子的成功率仅为0.9％。杂种的F-1种子具有休眠。由于卵巢流产，F-1植株不育，并观察到8-11％的花粉可育性。由于花蜜的性状，片形状，花萼形态和其他花序性状，这些植物也是最佳的遗传种群，因为它们的父母双方都表现出许多性状的多样性。由于涉及的物种在遗传和地理上都相距遥远，因此预计该十字架会承受一定的遗传负荷。

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